User and Installation Manual
Contents
1. C1 1 amp Co 4 NO 345 Ox 159 346 Ox 15 348 Ox 15 15F float kWatt 160 kWatt GO 23 TI 51 352 instant power 8895 SNV Engineering Ltd 18 INSTALLA USER amp NV ENGINEERING 367 16 368 Ox 161 353 355 0 163 0 164 166 0 168 16 358 Ox 24 0197 SUJnjeJ pesn jou son eA Jowod 11 170 384 Ox 399 18F 400 Ox 18A 388 Ox 394 Ox 401 Ox 180 Ox 182 184 190 191 192 402 Ox 404 Ox 194 Ox 196 Ox 198 SNV Engineering Ltd 19 INSTALLA USER amp NV ENGINEERING 15 kWaitt float 412 Ox 19C Ox 19E Ox 1A0 1 419 Ox 420 Ox 1A4 0 1 6 1 9 425 Ox 426 Ox 431 Ox 1AA 24 1AF float float 441 Ox float 1B9 oJ z pesn jou float float 10 465 Ox 101 0 103 kWatt kWatt 1 1C8 450 Ox 456 Ox 1 2 468 Ox 12 kWatt 1D4 SNV Engineering Ltd 20 INSTALLA USER amp NV ENGINEERING Ox 1072. 6 Safety 7 Sal OLY 00015 8 9 daana 9 Communication bus and power supply 10 Inspection and nahdlB 10 PED alae TR OTT 11 Card mounting and 11 Cables and USES 12 Connectors plug 12 12 Opera UON T 13 Communication and Monitoring 13 Modbus Memory 13 VIOD BUS FUNCTIONS A 23 MODBUS default Card address eee 24 Technical ASSISTANCE ooi a a d D PO Ee EST 25 Annex m 26 Annex B Recommended board 30 Single line SAINT 30 SDVEWS TTL 31 bal a 32 SNV Engineering Ltd SNV ENGINEERING Description Overview SNVO EC X USER amp INSTALLATION NUAL V1 1 27 SNVO27EC is a combiner box card with dc current voltage measurement and one digital input It is designed to be used in photovoltaic parks with central inverters in order to con
3. A Isometric view A scaler 15 ro fgg Lana kna rt ban StL sl ste Bottom view Scale 1 4 B B 24x Fuses C D elel 18 alal SNVO27EC 24x Fuses 800 EL NE Re Itemref Title Name designation material dimension etc Article No Reference Front view Designed by Approved by date Date Scale F Scale 1 4 Skamnakls amp Valdakis 22 04 2013 11 SNVO27 Assembly 1 SNV SNVO27M 001 LY Isometric view Scale 1 5 Bottom view Scale 1 4 24x Fuses SNVO27EC A 24x Fuses 800 min Quantity Title Name designation material dimension etc Article No Reference Front view Designed by Approved by date Filename Date Scale 1 4 Skamnakls amp Valdakis 22 04 2013 SNVO27 Assembly 1 SNV SNVO27M 001 2 1 SNV Engineering Ltd 31 SNV SNVO27EC X USER amp INSTALLATION MANUAL ENGINEERING V1 1 Photos os EE B B BG BG GB GB B BG B B B B BL B B BG LL E ON E E AR NE E EE Ng EN REN gc ux E Eg E l SNV Engineering Ltd 32
4. 0 4 0 0 0 SNV Engineering Ltd 16 ONV SNVO27EC X USER amp INSTALLATION MANUAL 1 ENGINEERING V1 195 EN mw 243 D 7 _ z SEN j 253 SNV Engineering Ltd ONV SNVO27EC X USER amp INSTALLATION MANUAL 1 ENGINEERING V1 254 Ox OFF float UM OL float Celcious temperature 257 Ox 101 Volt system voltage 259 Ox 103 Ox 104 system voltage float Volt Ox 105 averaged value Ox 106 system voltage holded float Volt Ox 107 value instant total power 265 Ox 109 ATA float kWatt averaged total power 267 10B Le float kWatt holded total power 269 100 10 total energy float KWH Ox Of last period Ox 110 unsigned long CSec time of last period 273 111 int Ox 112 unsigned long csec time since last mark 275 113 int 320 Ox 140 0 141 float 322 0x 142 0 143 float kWatt 324 144 Ox 145 float kWatt 326 Ox 146 0 147 float kWatt 328 Ox 148 0 149 float kWatt 330 14 Ox 14 float kWatt 332 0x 14C 0 140 float kWatt 334 0 14E 0 14 float 336 0 150 Ox 154 float kWatt kWatt Co CO JI 45
5. SNV ENGINEERING SNVO27EC X Combiner Box Card User and Installation Manual SNV Engineering LTD 24 B Papadiamantopoulou Street 1 floor llissia e Athens e Greece 11528 Phone 30 2107779260 Fax 30 2107703223 Site www snveng gr Document Follow up Verified by Vaidakis Michae 25 08 2013 Versions Indices Modification 25 08 2013 Initial Draft Version 16 12 2013 Initial release version 03 01 2014 Certifications and single line diagram 13 01 2014 Drawings added This document and the information it contains are the sole property of SNV They shall not be disclosed nor reproduced without the prior written approval of SNV as originator SNV Engineering Ltd Table of Contents Document EolloWeU A GG ap aal VEION iu ii PSC 1 NA NA 1 PETI E Ga a 2 5 3 Electrical Characteristics 3 Physical amp Environmental Characteristics 3 Measurement Specifications 4 Communications and bus 5 4 5
6. 12bit Thermal Drift on board 0496o compensated Note 6 0 0496 C Voltage measurement 0 0 Calibration voltage 700 V Note 6 Compensation even for averaged values is performed before value transmission using actual board temperature measured by the on board temperature sensor Long time averaging with large temperature variations could produce thermal drifts on the transmitted values respectively Communications and bus Specifications Hardware layer RS485 Modbus RTU Default baud rate 9600 bps Bus Short Circuit Protection Max number of nodes SNV Engineering Ltd SNV ENGINEERING Layout USER amp INSTALLATION A SNVO27EC X NUAL V1 1 The card is separated in two main areas The one bottom side is dedicated to the measurement of the current passing through the card and the positive and negative collector bars and to accommodation of the fuses for each string This area is a high voltage area where voltage is up to 1000Vdc exist CAUTION To the card will be connected high voltage signals up to 1000Vdc The operation and installation of the card is considered to be done from qualified personnel The high voltage area is marked on PCB with a dash line All area inside dash line is in high voltage up to 1000V dc The other area upper right is the low voltage area The Modbus interface and card power supply are connected to this area Th
7. 471 473 Ox 109 Ox 1DA 476 Ox 1DC 1DD 477 Ox 478 Ox 1DE Ox 1 1E1 481 Ox 482 0x 1E2 Ox 1 4 486 Ox 1E6 1 7 488 Ox 128 Ox 1 0 495 1EF 496 Ox 1EC 24 1F0 0 0197 SUJnjeJ jou float float float Ox 1FA 1FB 1F5 1F6 502 Ox 511 Ox float 1FF KWH float poled 152 y jo ne MET 2 SNV Engineering Ltd 21 ONV SNVO27EC X USER amp INSTALLATION MANUAL 1 ENGINEERING V1 7 x 23C Coils digital input modbus function code 1 N AJOJN O 7 575 530 212 534 Ox 216 EE 9o 537 KWH 13 538 21 540 21C 542 Peis poet EN rear foes 547 KWH 18 550 226 552 11 9 0 555 KWH 22 556 22C 5 8 ian 569 E 571 5 0 NE E NN NN type units description ofox oo bt digital input SNV Engineering Ltd 22 SNVO27EC USER amp INSTALLATION MANUA X L ENGINEERING V1 1 Holding registers commands modbus function code 10 type description Commands hold 0x01 Hi byte mark 0x02 change 21 Lo byte if command is change address
8. The following symbols appear in various places on the card to call your attention to hazards or to indicate that you should consult the manuals for further information Double insulation or reinforced insulation CAUTION RISK OF ELECTRIC SHOCK CAUTION RISK OF DANGER Note When an equipment is marked with this symbol the documentation must always be consulted in order to find out the nature of the potential HAZARD and any actions which have to be taken SNV Engineering Ltd SNV ENGINEERING Installation Overview SNVO2 7 USER amp INSTALLATION MA A NUAL V1 1 The below installation procedure is proposed by SNV Engineering in order to ensure the good and safe operation of the card In case that the described procedure is not followed SNV Engineering is not responsible from any caused damages or injury Card has DC current measurement channels with current output terminal common CAUTION To the card will be connected high voltage signals up to 1000Vdc The installation is considered to be done from qualified personnel The card should be installed in such a way that there is no access to it by hand neither from the cables part nor from any other place CAUTION The card must be installed following the below restrictions gt 10mm gap from grounded plates gt 20mm gap from non grounded plates Note The gap is defined as the distance between relevant plate or othe
9. EN SNV Engineering Ltd SNV ENGINEERING USER amp 18 Ox 012 0 013 float Amperes o on oie Amperes 02 brs Aries o Ampere Ampere Ampere Ampere FN oa Ampere x Amperes 04A x O4B float Amperes x 04 Amperes N O O O gt NO Co 0 IN Ei O O O OD 01 1 O1 OT NO OJO 09 1 0 4 5 09 4 O 5 09 4 8 5 INSTALLATIO 9 2 gt 0 m c current averaged SNVO27 N MA A EC X NUAL V1 1 O SNV Engineering Ltd ONV SNVO27EC X USER amp INSTALLATION MANUAL 1 ENGINEERING V1 77 Ox 040 CN 89 059 PIE 212 AN 812 CAN 99 Ox 063 2 2 07 ik ii 2 17 25 2 15 O OJO N N O O not used returns zero I0 gt gt gt ri gt rl riPrsy gt gt gt
10. then set new target address Hi byte if command is change address then set new target address 1 Ox 01 if command is change address then set new target address MODBUS Functions Modbus package structure ADU Additional address For protocol description see MODBUS APPLICATION PROTOCOL SPECIFICATION v1 1b Implemented Modbus functions are as the following table 4 0x04 Read File Record 00000000 20 0x14 Read File Record 21 0x15 Write File Record 43 0x2B Read Device Identification SNV Engineering Ltd 23 SNV ENGINEERING A SNVO27 USER amp INSTALLATION MA A EC X NUAL V1 1 CAUTION Do not use functions 20 and 21 can cause damage to card Functions 20 and 21 are used for device calibration MODBUS default card address Modbus address can get a value of 1 to 247 Cards are taking those values sequentially depending their serial number and it is unlikely to have a conflict on a PV park In such even or in case of a replacement without changing any setting address can be changed through Modbus using command change address see above Address can be deducted from serial number written in hexadecimal for on board using the following formula modbus address MOD HEX2DEC TEXT Serial Number 247 41 Note that Serial Number is typed on board SN and can be read through modbus function 17 Report Slave ID
11. SNV Engineering Ltd ONV SNVO27EC X USER 8 INSTALLATION MANUAL 1 ENGINEERING V1 Technical Assistance If you need technical assistance or should it be necessary to return your product for repair or calibration use the contact details below SNV Engineering Ltd Papadiamantopoulou 24 B 11528 Athens Greece web site www snveng gr email snv snveng gr tel 30 210 7779260 fax 30 210 7703223 SNV Engineering Ltd 25 SNVO27EC X USER amp INSTALLATION MANUAL ENGINEERING V1 1 Annex A Drawings List of drawings DX 00 SNV Engineering Ltd 26 USER 8 INSTALLA SNV ENGINEERING 76 a a o RARA CT C D CC SNV Engineering Ltd 27 SNV SNVO27EC X USER amp INSTALLATION MANUAL E ENGINEERING V 1 Section view C C Scale 1 2 487 Front view Scale 1 2 NOTES 1 Material Cu Copper 25x5x3000 matera Amerson ee Skarmakis amp Vaidakis 26 07 2013 F Collector Bor 1 Socomech SNVO27M 001 Bottom view Scale 1 2 630 411 13 25 x 17 875 Front view Scole 1 2 NOTES 1 Moterial Cu Copper Sheet 1000x2000x4 NTT Toename matera anoe Nomenoe Zuma eee Skarmakis amp Vaidaki
12. V Engineering Ltd ONV SNVO27EC X USER amp INSTALLATION MANUAL 1 ENGINEERING V1 Operation Communication and Monitoring For communication MODBUS protocol over an RS485 serial line is implemented RTU mode 29600bps See further MODBUS Application Protocol Specification v1 1b and MODBUS over Serial Line Specification and Implementation Guide v1 02 Data can be read through 16bit input registers Commands are send by writing Holding registers Three commands are implemented hold mark and change address Hold command transfer instant values to holded values Command can be send with a broadcast write acquiring a snapshot of all the currents from all the cards in the bus Mark command initiates averaging at the same time terminates previous averaging and transfers the result to the relevant registers It is suggested to broadcast periodically the mark command with the desired period as for example 10 mins and during each period read and store the averaged data Mark command may be applied individually to allow for each card to acknowledge In case that mark command is broadcasted time elapsed since last mark on each card is available see modbus memory map bellow in order to check proper transmission Modbus Memory Map The memory map of the card is describing in the following table 16bit input registers modbus function code 4 L e Amperes 13 instant current
13. cables connected to the current channels the IPC 620 have to be followed by the installer The cable should be connected to the voltage measurement negative terminal using ring terminal and lock washer above the ring terminal CAUTION Cables to be connected to the card terminals may exceed 60 C Temperature rating of the cables to be connected to the card terminals must be determined accordingly The provided combiner box card is intended to be installed in an enclosure in a combiner box product Depending current rating enclosure shape size material and design temperature rise occur Cable temperature rating must be set accordingly by the installer of the card and designer of the combiner box Indicatively for 9A per channel operation in all channels temperature rise of the order of 30 grad inside the enclosure can be observed Should that be a restriction end product designer can consider current derating and or operating temperature derating Connectors plug preparation The connector plugs to be used are those listed in table 2 or equivalent For the preparation of the cables connected to the plugs the IPC 620 have to be followed by the installer Plugs should be connected with cables while unplugged The Combiner Box Card dimensions are LxWxH mm gt 508x76x40 without collector and mounting bars gt 598 76 40 with collector and mounting bars See drawing at Annex A for more details SN
14. e low voltage area is protected through a F1 1A fuse P N SF 1206F100 2 The low voltage and high voltage areas are separated by an isolation area Voltage Measurement Collected Current Output Negative terminal Low Voltage Area Isolation Area High Voltage Area 24 Current Inputs Figure 2 SNVO27EC Topology Diagram The SNVO27EC uses the connectors CON1 to connect to the bus and power supply see table 1 Connector CON2 has two pins to connect a dry contact switch The connector CON2 is used to monitor a switch or a sensor acting as a switch ex surge protection door opening disconnector trip etc CAUTION At the connectors CON1 and CON2 should be connected only to safety extra low voltage systems SNV Engineering Ltd ONV SNVO27EC X USER amp INSTALLATION MANUAL 1 ENGINEERING V1 The connections for the connectors CON1 and CON2 are listed in the table 1 Dry contact input Table 1 Connectors Description The connector plugs used are equivalent to the ones listed in the following table Manufacturer P N For CON1 20020006 H041BO1LF For CON2 20020006 H021BO1LF Table 2 Connectors Description Ordering Information Listed below are part numbers for the SNVO27EC and available accessories Cards are provided with collector bars mounted and mounting bars as a whole Separate part numbers for collector bars and mounting bars are provided only for replacements Item Part Number 24 chann
15. ed on the card including any other conducting element like bolts nuts bar cables and cable terminals fixed on the card SNV does not assume liability for the customer s failure to comply with established procedures Read this chapter before you perform any operations or installation of the card If the equipment used in a manner not specified by the instructions of user manual the protection provided by the card may be impaired SNV s equipment is designed to and reviewed against to CE Safety and EMC standards These standards incorporate applicable electrical codes and safety regulations This manual contains information and warnings which users must follow for safe operation and to keep the apparatus in safe condition SNV Engineering Ltd SNV ENGINEERING Safety Symbols SNVO27EC USER amp INSTALLATION MANUA V1 rx Even when the apparatus is not connected to its power supply terminals can be electrically live and the opening of covers or removal of parts is likely to expose live parts The card must be disconnected from all voltage sources before it is disassembled for any adjustment replacement maintenance or repair For USA Canada the provided equipment is to be employed in accordance with ANSI NFPA 70 National Electrical Code NEC designed to be installed in accordance with the Canadian Electrical Code CEC Part CSA 22 1 and CSA C22 2 No 0 or designed to comply with both the NEC and CEC
16. els SNVO27EC card SNVO27EC X Collector Cu bar 5 027 001 Collector Cu SNVO27M 002 Mounting bar 1 SNV027M 004 Spacer 1 SNVO27M 005 Spacer 2 SNVO27M 006 Protection plate 5 027 007 according to drawings see ANNEX Table 3 Ordering information X is the hardware version SNV Engineering Ltd ONV SNVO27EC X USER amp INSTALLATION MANUAL 1 ENGINEERING V1 Safety instructions The Combiner Box Card SNVO27EC is designed and manufactured to be functionally safe for persons who operate or service it Potential hazards are addressed by a combination of careful system design and appropriate warning labels However during its operation high voltages apply on the card As a consequence the card is capable of causing serious personnel injury and damage to equipment if installed operated or serviced improperly CAUTION To the card will be connected high voltage signals up to 1000Vdc The installation is considered to be done from qualified personnel The card should be installed in such a way that there is no access to it by hand neither from the cables part nor from any other place CAUTION The card must be installed following the below restrictions 10mmgap from grounded plates 20mm gap from non grounded plates Note The gap is defined as the distance between relevant plate or other element and the card routes or components pins or the highest component mount
17. gt D gt gt gt 33 288 288 ec aa gt lollo lolo lalalala 8 15 5 o c c 9 oc o o o 0 o 0 0 90 0 O U gt 4 EN EN NN NEN NEN NN O gt 70 C 5 O SNV Engineering Ltd ONV SNVO27EC X USER amp INSTALLATION MANUAL 1 ENGINEERING V1 136 Ox 088 Moal 33 29 61 PS i i id ii 71 is is is 79 id id i 89 gt OO gt gt N N NO co O not used returns zero aja gt gt gt gt gt gt gt gt gt gt gt gt gt gt 3 3 8 3 ee D lololo lo lololo io 5 e Im lolo c o 9 0
18. nect in parallel strings and monitor string currents and voltage combiner lox central PV strings Inverter CJ FAI combiner 4 box card K d 0 401244 lt 4 4 4 monitoring Figure 1 5 27 Topology Diagram It has appropriate board shape to direct connect to DIN rail fuse holders avoiding extra cabling and material costs Current collector bars pre mounted and designed to be directly connected to the disconnector switch for a simpler and cost efficient installation Negative collector bar can be also provided Current measurement is performed on the positive side Low thermal drift high quality shunt resistors are used Voltage on them is amplified through precision amplifiers and then sampled and processed by 32bit CORTEX M3 microcontroller at 96MHz The microcontroller can deliver measurements through an isolated serial RS485 bus transceiver using Modbus protocol It can also hold values in order to perform simultaneous measurements through all the cards in a bus and then retrieve all the measurements The microcontroller is also calculating the average of voltage currents and current square values with 667Hz sampling for each SNV Engineering Ltd SNV ENGINEERING SNVO27EC USER amp INSTALLATION MANUA V1 r xXx channel The averaging period is indicated marked by a master controller broadcast command Ave
19. nsumption 24V DC all 24 channels 24V DC 13 5A all 24 channels 18V DC OA all 24 channels 18V DC 13 5A all 24 channels 18V DC 16A all 24 channels Measurement channel resistance N Note 1 The value is for each installed board Note 2 The maximum number of cards to be installed in series is 127 Note 3 Equipment pollution degree 2 Note 4 Current values lower than 35mA are pulled down to zero Note 5 Voltage values lower than 1V are pulled down to zero Physical amp Environmental Characteristics E CT EMC Emissions Immunity Measurement Category Transient Overvoltage Pollution degree Meets EN 61326 1 EN 50082 1 EN61000 4 3 Radiated EM fields immunity EN61000 4 4 Fast transient burst EFT EN61000 4 5 Surges EN61000 4 6 Conducted EM fields immunity Also successfully tested Criterion A at Conducted immunity at 10Vrms and Radiated immunity at 10V m instead of 3Vrms and 3V m required from the above standards Meets IEC61010 1 ed 3 1EC61010 2 030 ed 1 CB SCHEME NoE464243 A1 CB 1 UL file number E464243 rated for 1 5kV Indoor or outdoor use installed in a metallic and or plastic box SNV Engineering Ltd ONV SNVO27EC X USER amp INSTALLATION MANUAL 1 ENGINEERING V1 Measurement Specifications aa R Maximum averaging time 15 days at 667Hz sampling Current measurement 0 496 reading 0 2 range 13 5A accuracy ADC resolution
20. o the same bus The total length of the cable used for the boards interconnection is suggested not to exceed 1200m when bus repeaters are not used The same cable can be used for the power supply of the cards using an extra pair The power supply source should be 24Vdc and the current capacity should not exceed 5A The card has power supply inverse polarity protection Inspection and handling A Visually inspect the Card before installing it for any defect or damage Immediately notify the carrier if any damage is apparent CAUTION Proper ESD handling procedures must always be used when packing unpacking or installing the card Failure to do so may cause damage to the unit SNV Engineering Ltd SNV ENGINEERING Preparation SNVO27EC USER amp INSTALLATION MANUA V1 r Card mounting and support Card is mounted through DIN rail fuse holders and card collector bar mounted on the switch or another spacer An additional mounting hole may be used with a carefully selected spacer Caution must be paid to not distort the card and to not transfer any stress to it Fuse holder and switch level must be set properly For the installation and materials applied the following specifications should at least comply e ensure following gap defined as the distance between relevant plate or other element and the card routes or components pins or the highest component mounted on the card including any other cond
21. r element and the card routes or components pins or the highest component mounted on the card including any other conducting element like bolts nuts bar cables and cable terminals fixed on the card Connector 2 is a dry contact input having two states depending the contact of the connector s two pins or not CAUTION No voltage should be applied to any of the two pins of CON2 SNV Engineering Ltd SNV ENGINEERING SNVO2 USER amp INSTALLATION MANUAL 1 A V1 For USA Canada the provided equipment is to be employed in accordance with ANSI NFPA 70 National Electrical Code NEC designed to be installed in accordance with the Canadian Electrical Code CEC Part CSA C22 1 and CSA C22 2 No 0 or designed to comply with both the NEC and CEC Communication bus and power supply provision Card uses RS485 bus for data communication Cards are connected to the bus in series using twisted pair cable It is suggested to connect all cards in series in a line preferable with the master controller in the middle If not convenient a star topology with the master controller in the center may work depending of the cable length the number of the lines and their relative lengths In any case all the terminal nodes must be terminated with the appropriate resistor Bias resistors also must be installed RS485 transceiver used supports up to 128 nodes hence up to 127 boards can be connected t
22. raged values of different cards are synchronized and then collected Bandwidth consumption on the bus is limited giving the ability for a prompt response of the rest requests A contact input is also implemented in order to monitor other component like the condition of an SPD Board temperature is also measured and provided Features SNVO27EC offers the following see also specification tables 24 channels board shape to collaborate with DIN rail fuse holders on board positive current collector bar ready to connect to disconnection switch 24 independent dc current measurement at positive side O 13 5A current measurement range other ranges are available on demand 1000V voltage measurement Very Low Sensing resistance on measurement channels 10 system voltage up to 1000Vdc 667Hz sampling per channel 1 contact input Board temperature measurement On board long time averaging and integrations Communication using MODBUS over RS485 Board power consumption lt 1 5W Operating temperatures 30 C to 75 C 32bit ARM microcontroller 96MHz CE EMC EN61326 1 and Safety EN61010 1 CB SCHEME 1010 1 3 61010 2 030 1 NoE464243 A1 CB 1 ANSI UL61010 1 file number E464243 SNV Engineering Ltd SNV ENGINEERING Specifications Electrical Characteristics SNVO27EC X USER 8 INSTALLATION MANUAL V1 1 Power supply Absolute Co
23. s 26 07 2013 F Collector bor socomech SNV Engineering Ltd 28 SNV ENGINEERING SNVO27EC X USER amp INSTALLATION MANUAL 1 V 1 25xPEM PFLB M5 1 Section view E E Scole 1 2 Auxiliary view F Scale 1 2 25x17 875mm Front view Scale 1 2 matera amensonee __ quem Skarmakis amp Vaidakis 26 07 2013 F SNVO27EC A Holder Bor 1 socomech Left view Front view Scole 1 4 Scale 1 4 E materal m ee Skarmakis amp Vaidakis 26 07 2013 F SNVO27 Protection Plote for 26Pv4025 Edton Sheet SNVO27M 007 O SNV Engineering Ltd 29 SNVO27EC X USER amp INSTALLATION MANUAL ENGINEERING V1 1 Annex B Recommended board integration Single line diagram 1 24 Ch STRING INPUT SPD inger safe pe rr M Fuse Holders 5 27 Finger safe Fuse Holders 1 24 Ch STRING INPUT 1 24 Ch SOLAR CABLES 6mm2 and FROM PREVIOUS amp TO NEXT COMBINER BOX TO INVERTER SNV Engineering Ltd 30 ONV SNVO27EC X USER amp INSTALLATION MANUAL 4 ENGINEERING 1 3D views 1 2 3 4 5 6 7 8 RevNo Revision note Signature Checked
24. ucting element like bolts nuts bar cables and cable terminals fixed on the card gt 10mm gap from grounded plates gt 20mm gap from non grounded plates e ensure dielectric strength gt 3 5kV e ensure flammability rating better than 94V1 e ensure operating temperature range and aging strength depending application specifications The provided materials by SNV comply with the above Voltage measurement is conducted using as a negative voltage terminal the M5 bolt adjacent to the collection bar on the card shown on the following figure Use a ring terminal to connect to it Figure 3 SNVO27EC Voltage measurement negative terminal connection All M5 bolts must be tight with torque 3 4 Nm to ensure the conductivity Use plain washer DIN125 and above lock washer DIN127 between ring terminal or common bar and bolt head Do not apply lock washer directly on the card SNV Engineering Ltd 11 SNV ENGINEERING Dimensions SNVO2 7 USER amp INSTALLATION MA A EC X NUAL V1 1 Cables and fuses The cables should be properly selected and sized according to the application specifications Voltage must not exceed 1000VDC A fuse 10x38 gPV type must be installed with rated current up to 16A and appropriate voltage rating CAUTION Voltage must not exceed 1000VDC A fuse must be installed for each current measurement channel separately with rated current up to 16A For the preparation of the
Download Pdf Manuals
Related Search